deco bottle spg's

[ph]

Not accurate enough for my liking, prob ok for deco bottles but wouldnt want to use them where more precise readings are needed such as bottom stages

my 2c

I really dont find the hose to be that much of an issue. those litle 6inch milflex hp hoses look pretty good, havnt used one myself yet

There are a few posts here that demonstrate an inability to plan dives. There is no need to look at a bottom stage SPG on a dive (different on a cave dive where the cylinder is NOT a bottom stage, it is a staged cylinder). LEARN your cylinders. LEARN how long they last at certain depths.

All you need to do is analyse and confirm starting gas pressure prior to jumping in the water. 220 bar. in an 11L bottom stage, at 70m that is 18mins for me. Don't look at the SPG. When it sucks dead, switch to BG. I want to get as much gas out of my bottom stage as possible, which means I'm going to empty it. Why they heck would I worry about looking at the SPG on the dive ?

Same with deco cylinders. Why do you need to check the SPG ? You should know that you have enough gas for your planned deco (and 1.5 times for reserve ) before you jump in the water. Again, no need to check the SPG during the deco (there is when you deploy the hose though), as you know you have enough gas for it.  

For a cave dive, if you're using half +15, then you basically hit around 120bar on the stage, drop it and pick it up on the way home. +/-5-10bar isn't going to be an issue (especially given that if you are using stages, you have redundancy in the back gas anyway).

Learn your dive time and depth, you can approximate tank pressures from known use. SPGs are only an AID to an effective dive plan.... but I am sure that you would have covered all this on your TDI seal-team bubble blower trimix program huh ? (fire in the hole... ).

PH, can you tell me from your real world trimix diving experience your thoughts on the above ?  (more stirring on this forum than an episode of My Kitchen Rules)

your a fool if you don't monitor your spg on any dive!!!!!!!!!..i dont give a fuck how guru you think your gue training is.. that is poor dive practice as far as im concerned

oh and how ironic all this new pearls of wisdom from the guy who used to cave dive with a hoseless air intergrated computer lol lol lol

you are the greatest born again diver i know...keep preaching though it's a pissa

[Craig]

I dont look at my SPG at all, i just do what Rick does!

NOW you tell me!!!

I've just been doing what you do !! 

Shit - now you both tell me!

[dontdive]

You feeling left out rick?

WOW that was quick

You people have any work to do? 

What can i say im a Uni bum!

[dontdive]

I really dont find the hose to be that much of an issue. those litle 6inch milflex hp hoses look pretty good, havnt used one myself yet

There are a few posts here that demonstrate an inability to plan dives. There is no need to look at a bottom stage SPG on a dive (different on a cave dive where the cylinder is NOT a bottom stage, it is a staged cylinder). LEARN your cylinders. LEARN how long they last at certain depths.

All you need to do is analyse and confirm starting gas pressure prior to jumping in the water. 220 bar. in an 11L bottom stage, at 70m that is 18mins for me. Don't look at the SPG. When it sucks dead, switch to BG. I want to get as much gas out of my bottom stage as possible, which means I'm going to empty it. Why they heck would I worry about looking at the SPG on the dive ?

Same with deco cylinders. Why do you need to check the SPG ? You should know that you have enough gas for your planned deco (and 1.5 times for reserve ) before you jump in the water. Again, no need to check the SPG during the deco (there is when you deploy the hose though), as you know you have enough gas for it.  

For a cave dive, if you're using half +15, then you basically hit around 120bar on the stage, drop it and pick it up on the way home. +/-5-10bar isn't going to be an issue (especially given that if you are using stages, you have redundancy in the back gas anyway).

Learn your dive time and depth, you can approximate tank pressures from known use. SPGs are only an AID to an effective dive plan.... but I am sure that you would have covered all this on your TDI seal-team bubble blower trimix program huh ? (fire in the hole... ).

PH, can you tell me from your real world trimix diving experience your thoughts on the above ?  (more stirring on this forum than an episode of My Kitchen Rules)

[/quote]

Seriously Ian just coz i like an acurate SPG doesnt mean i can't plan a dive.
Anyway ive given my 2c about these little guages for what its worth (apperntly not much though  )

[Ian T]

PH,

Not sure why I should waste my time responding, but will for mild amusement.

I think it is far better that people learn and change what they do, as they receive better information. My hoseless SPG was about 5 yrs ago, and I have considerably refined my dive practises since then. What have you done Harvs ? Again, my question to you that you NEVER answer is : Please list all your post course trimix diving experience.

Your inability to read my post and understand is clear demonstration of an inability to think about what your doing on a dive. If I am diving a bottom stage, I know how much gas is in it at the start of the dive. You really dont need to know how much is in it on the bottom. When it's dead, thats how you know your consumption.

Dontdive - I'm not saying that an accurate SPG isn't important, but what do you define as accurate ? A air integrated reading of 187 bar ? or is a needle on 190 ok ? If you plan the dive to account for your gas use, you should be getting in the water well aware of how much gas you need for the dive. While Decoplanner / V planner can do all this for you, I find most divers dont have a simple way of knowing how much gas they need for dives. It seems pretty important to me to know I have sufficient gas for a dive.

PH - Look forward to your answer on your trimix experience.

[Ian T]

Other thing i should add, that in HIGH flow cave (ginnie), you simply cant check your SPG regularly. You need your hands for pull and glide, else you wont get into the cave. It would be inefficient to do so. You can check it though when you reach a lower flow area, and then closer to your turn time.

[ph]

PH,

Not sure why I should waste my time responding, but will for mild amusement.

I think it is far better that people learn and change what they do, as they receive better information. My hoseless SPG was about 5 yrs ago, and I have considerably refined my dive practises since then. What have you done Harvs ? Again, my question to you that you NEVER answer is : Please list all your post course trimix diving experience.

Your inability to read my post and understand is clear demonstration of an inability to think about what your doing on a dive. If I am diving a bottom stage, I know how much gas is in it at the start of the dive. You really dont need to know how much is in it on the bottom. When it's dead, thats how you know your consumption.

Dontdive - I'm not saying that an accurate SPG isn't important, but what do you define as accurate ? A air integrated reading of 187 bar ? or is a needle on 190 ok ? If you plan the dive to account for your gas use, you should be getting in the water well aware of how much gas you need for the dive. While Decoplanner / V planner can do all this for you, I find most divers dont have a simple way of knowing how much gas they need for dives. It seems pretty important to me to know I have sufficient gas for a dive.

PH - Look forward to your answer on your trimix experience.

Ian, we all know the answer to that and is old news and certainly nothing that embarresses me. The like of you make trimix out to be the be all and end all of diving...it's crap...your skill and diving ability for trimix is learnt and sorted out way before you start diving trimix. Your early decco training and diving is where it all counts....going to trimix really is only an extension of the quality of diver you have become prior to learning trimix.

some here seem to think that diving trimix makes you some sought of hero along with diving really deep. depth junkies are an accident waiting to happen.


for me doing trimix was more of a personal journey than anything...after failing my pen course my confidence was belted left right and centre.........so i decided I would go and do this a a personal deveopment in my own diving as well as gaining the skilss to do certain dives if I chose to do so, my main aim for dives was kilsbys since it had opened up to trimix....i didn't bother with deep wrecks here as i couldn't be fucked getting sea sick and those who have seen how sick i get would understand...there is also a cost factor, to do and 80m (say the bayonet) dive one is looking at a few hundred bucks just in gas (on OC) plus the dive cost which is about $150 per diver  really who can be fucked paying that money

at the end of the day Ian if you think im a shit diver.....so be it itmakes no difference to me.....but you do have a name as a bit of a flog in the techy circles here in melb, so I might be contriversial when it comes to cdaa politics but at least I'm not a knob

interesting that you can suggest that I don't know what Im doing on a dive....how the fuck would you know???

Ian I know you place alot of stigma on post course trimix dives, the difference between your trimix course and mind were mine, post course trimix dives would be dives between 55m and 100m(and no as you know I haven't done any of this diving in years) , wheres as your trimix course post dives would be between 30m and 45m.......sorry mate they're air dives for me, so based on that you are a really experienced trimix diver

I have been out of the sport for some time and have sold some gear (even to you) but I will be heading back soon and wil get out with jeff giddons soon, for some dives in the 40's, but more of my focus is getting the kids wet

now getting to your refined diving of recent years...mate you havent refined your diving you have joined a fucking cult!!!!!  there's a big difference


so Ian I am more than comfortable about my diving level and always look forward to learning from those more experienced, its not a competition for me!!!


it seems that your training pays so much weight on information in your head....sorry not for me I would rather have a tool (with redundency) to provide me with that info and check this through the dive

you need to get some new material mate

[dontdive]

Dontdive - I'm not saying that an accurate SPG isn't important, but what do you define as accurate ? A air integrated reading of 187 bar ? or is a needle on 190 ok ? If you plan the dive to account for your gas use, you should be getting in the water well aware of how much gas you need for the dive. While Decoplanner / V planner can do all this for you, I find most divers dont have a simple way of knowing how much gas they need for dives. It seems pretty important to me to know I have sufficient gas for a dive.

When i say accurate i mean that the spgs (1inch face) ones i've seen are i dont know maybe accurate to like 20bar, not that there not accurate just hard to read due to size.

I plan my dives and dive my plans. and im well aware of my gas and my gas consumption but to me the bonus of having a slightly smaller spg i dont see the benifit outways the lack of distinguishable pressure

[ph]

by the way whats this bottom stage stuff???

[yellowneonhood]

I thought spg's were there so you had something to look at over and over again when your narked off your tits at 58ms on air at kilbys - maybe thats why lots of old guys do deep air dives on independents - so they have twice as many gauges to look at and have know idea what they mean. What's this? ......35bar?  KA POW!

Anyhow back on topic.

[dontdive]

by the way whats this bottom stage stuff???

Sorry i was acctually refering to a staged cylinder. ie a cylinder to extend bottom time